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© 2026 STATLAS. Data under CC BY 4.0 from World Bank, GeoNames, Open-Meteo & others.

Indices labeled “modeled” are computed estimates — see methodology.

CitiesSão João do PiauíPopulation

Population in São João do Piauí

Brazil · São João do Piauí profile

Population

21,421

people

World rank

#25684

of 33750

Percentile

24%

higher is better

Data quality

Measured

Total resident population.

Source: GeoNames · source data.

See full ranking About this metric São João do Piauí profile

FAQ

Frequently asked

What is the population in São João do Piauí?

São João do Piauí has a population of 21,421 people. Total resident population.

How does São João do Piauí rank for population?

São João do Piauí ranks #25684 of 33750 cities for population (higher is better).